Have you ever come across the situation where runnig the task manager you see the w3wp.exe, processid and wondered which worker process, app pool represent that w3wp.exe. This blog will help you in finding that. Let's say the task manager is showing the following screen.
There are two w3wp.exe displaying in task manager. But we want to know which worker processor, application pool it represents. We neeto go to IIS manager for it.
Click the server name >> Worker processes (under IIS section). On clicking it you will be ecnountered with this kind of screen:
As you can see from the above screen we can get the information about app pool, virtual bytes, physical bytes and CPU usage for a particular process id.